| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily and surely add an ID code to a paper container, and prevent the ID code from being recognized by persons other than a purchaser. <P>SOLUTION: A non-black print layer 12 and a black ink layer 11 located on the non-black print layer 12 and containing a black ink pigment are formed at a desired position of a paper base material 14A. YVO4 laser light is applied in a pattern to the black ink layer 11 to sublimate the black ink layer 11. The underlying non-black print layer 12 is exposed from an opening 8a of the black ink layer 11 to form the ID code 8. Thus, a gable top paper container 1 having the ID code 8 and a blank 1a for the gable top paper container are formed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
